14. Me wanting to ban shitty music was a joke....

....but the point is that no one would stop him from singing on a street corner or saying whatever he wants elsewhere. He's getting paid money to appear at a concert as a performer. If the promoters of that concert decide to end their business deal with him for whatever reason, it is not suppressing free speech any more than it would be for promoters to cancel an appearance by Ted Nugent after what he said about Obama because they don't want him having their platform.